Larry,
There are several ways to post large pictures.
I post a whole lot of pictures here and on some other forums. I used to use Photobucket to host my pictures. It was free. In a world wide sweep, Photobucket suddenly blocked millions of pictures world wide unless $400 a year was paid.
I dropped out.
I now use Fototime. It cost me $24 a year. So far, I am very satisfied with it.
It can be seen here.
http://www.fototime.com/There is another option if you only intend to post a few pictures.
This one is free. Your pictures should stay up until the host closes down. If that ever happens your picture will disappear.
Remember, you get what you pay for.
Click on this link
http://photoposting.is-great.net/?i=1Now click on "Select".
It will take you to your documents on your computer where you can select the picture you want to show off.
Pick your picture and hit "open".
It will give you an "img" code. Copy and paste that code in your thread and you can see the picture.
Here is an example of one I just did of my backyard.
Try it and see if it works. It is real easy.
Zulu